The Thelma Threaders allow for maximum play. Endless layering options result from choosing to thread the box chain through at varying lengths, showcasing the dangling 3x4mm gemstones. Black Onyx is an opaque gemstone that boosts self-discipline, enhances focus, and offers protection and stability to the wearer. Finished with a 2. 5 micron layer of 18k gold over sterling silver for lasting luxury. Stamped with Amy's logo and gift boxed. Do not sleep in jewelry It's a good idea to put jewelry on last, and then take it off first thing Do not wear in water, whether showering or bathing Don't expose to perfume, oil, or lotion Avoid excessive sweat while wearing Store away from moisture